SecurityCraft

The block change detector watches a set range around it for altered blocks and keeps a record of each one, noting where it happened, who was nearby, when it occurred and what the block became. Keycard readers accept a defined set of keycards and emit a redstone signal only when the correct card is inserted. Security cameras can be viewed from anywhere in the world, which allows owners to check on a location or keep watch on a rival.

Other pieces cover deception and defense. Projectors place fake blocks into the world, and fake lava and water look like the real liquids but behave differently. Rift stabilizers block teleport attempts with chorus fruit or ender pearls near a base, and sentries fire on approaching mobs. The mod is published for Forge and NeoForge, and it is open source under the MIT License. Client and server both need it, so every player on a server running it must install it as well. Builds cover 1.6.4 – 26.3, with the latest Forge file for 1.20.1 and the latest NeoForge file for 26.3 on the beta channel.